Table 2.

Knowledge, attitudes, and practices regarding Zika of participants completing Internet- and paper-based surveys.

Variables			Investigation approach		Total (N=1068), n (%)	χ2 (degrees of freedom)	P value
			Paper-based (N=447), n (%)	Internet-based (N=621), n (%)
Knowledge
	Zika virus is primarily transmitted to humans through mosquito bites
		Yes	301 (67.3)	591 (95.2)	892 (83.52)	152.1 (2)	<.001
		No	108 (24.2)	30 (4.8)	138 (12.92)
		Unclear	38 (8.5)	0 (0.0)	38 (3.56)
	Pregnant women are at a high risk of severe complications from Zika
		Yes	254 (56.8)	559 (90.0)	813 (76.12)	173.7 (2)	<.001
		No	105 (23.5)	54 (8.7)	159 (14.89)
		Unclear	88 (19.7)	8 (1.3)	96 (8.99)
	Pregnant women infected with might have newborn babies with microcephaly
		Yes	212 (47.4)	497 (80.0)	709 (66.39)	190.5 (2)	<.001
		No	93 (20.8)	107 (17.2)	200 (18.73)
		Unclear	142 (31.8)	17 (2.7)	159 (14.89)
	Where are mosquitoes extremely common
		Dark wet places	445 (99.5)	611 (98.4)	1056 (98.88)	3.3 (2)	.19
		Other	2 (0.5)	9 (1.4)	11 (1.02)
		Unclear	0 (0.0)	1 (0.2)	1 (0.10)
Attitudes
	Do you worry about contracting Zika
		Yes	157 (35.1)	345 (55.6)	502 (47.00)	43.6 (1)	<.001
		No	290 (64.9)	276 (44.4)	566 (53.00)
	How much harm do you think would occur to your body if you contracted Zika
		Serious	147 (32.9)	188 (30.3)	335 (31.39)	1.0 (2)	.60
		Mild	273 (61.1)	398 (64.1)	671 (62.83)
		No harm	27 (6.0)	35 (5.6)	62 (5.81)
Practices
	Carry out strategies to prevent mosquito bites at home
		Yes	437 (97.8)	615 (99.0)	1052 (98.50)	2.8 (1)	.09
		No	10 (2.2)	6 (1.0)	16 (1.50)
	Actively seeks information about Zika
		Yes	323 (72.3)	581 (93.6)	904 (84.64)	90.7 (1)	<.001
		No	124 (27.7)	40 (6.4)	164 (15.36)